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电化学(中英文) ›› 2004, Vol. 10 ›› Issue (3): 303-306. 

• 研究论文 • 上一篇    下一篇

新型锂电池用复合隔膜的制备及其电化学性能表征

程琥,杜洪彦,杨勇   

  1. 厦门大学化学系固体表面物理化学国家重点实验室,厦门大学化学系固体表面物理化学国家重点实验室,厦门大学化学系固体表面物理化学国家重点实验室 福建厦门361005 ,福建厦门361005 ,福建厦门361005
  • 收稿日期:2004-08-28 修回日期:2004-08-28 出版日期:2004-08-28 发布日期:2004-08-28

Preparation and Electrochemical Performance of New Composite Seperators for Lithium-ion Batteries

CHENG Hu, DU Hong-yan, YANG Yong~   

  1. (*) , Xiamen Univ., Xiamen 361005, China
  • Received:2004-08-28 Revised:2004-08-28 Published:2004-08-28 Online:2004-08-28

摘要:  利用浸渍法在聚丙烯微孔膜(Celgard2400)表面涂覆掺有纳米二氧化硅的聚氧乙烯(PEO),制备了新型锂电池用复合隔膜.采用交流阻抗法、扣式电池充放电等实验技术测试了复合隔膜的电化学性能.

关键词: 锂离子电池, 隔膜, 二氧化硅, 聚氧化乙烯

Abstract: New composite seperators for lithium ion batteries were prepared by coating PEO mixed with nanosize SiO_(2)onto microporous polypropylene(PP) seperators. Highly conductive electrolytes were prepared by soaking them in an electrolyte solution. With these composite separators, the lithium ion cell consisting of Li anode and LiNi_(0.8)Co_(0.2)O_(2)cathode were assembled. The high initial discharge capacity and good capacity retention were obtained through the cell.

Key words: Lithium ion batteries, Separators, Silicon dioxide, Poly(ethylene oxide)

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